It consists of a riot helmet with a Plexiglas visor (hinged) and a padded stab-proof vest. Although this armor has a relatively low Damage Resistance rating, it will be the first set of armor the player will be able to possess and will provide basic protection against early-game foes. The Vault 101 security armor also has little or no movement penalties, allowing characters to move quicker than other, bulkier variants.

Its performance is identical to the armored Vault 101 jumpsuit, the only difference being the armored Vault jumpsuit has effects, but the Vault 101 security armor can be repaired. It can be repaired with combat armor and its variants.

The helmet is identical in appearance to the Rivet City security helmet (See Rivet City security uniform) but it has lower damage resistance and unlike the Rivet City version it is unable to be equipped with any eyewear.